Vice President Dick Cheney listens to a briefing on NASA's Spirit and Opportunity Expeditions to Mars in the Jet Propulsion Laboratory's mission control room in Pasadena, Calif., Jan. 14, 2004. JPL developed and now remotely controls the rover Spirit since it landed on the planet Jan. 3, 2004. Sitting next to Vice President Cheney are, from left, Dr. Frederick D. Gregory, NASA Deputy Administrator, Dr. David Baltimore, President of the California Institute of Technology and Dr. Charles Elachi, the Director of the Jet Propulsion Laboratory.